WHEN THERE’S A WILSON ... Rookie running back David Wilson breaks a run past the 49ers defense during the Giants’ 26-3 victory yesterday in San Francisco.Getty Images

WHEN THERE’S A WILSON … Rookie running back David Wilson breaks a run past the 49ers defense during the Giants’ 26-3 victory yesterday in San Francisco. (
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SAN FRANCISCO — It is not enough for David Wilson.

The rookie running back, setting a decisive tone, returned the opening kickoff of the second half 66 yards, helping set the Giants up for the touchdown that turned yesterday’s showdown with the 49ers into a 26-3 rout. Coach Tom Coughlin called that return “a momentum-changing play,’’ but Wilson is looking for more.

“Closer and closer, but close ain’t good enough any more,’’ Wilson said. “I got to set something in the end zone now.’’

Wilson knew he was getting the ball to start the third quarter and he never hesitated in bursting up on a middle return that was blocked perfectly, reaching the 49ers’ 32-yard line before he was caught. Seven plays later, Ahmad Bradshaw scored to put the Giants ahead 17-3.

“All the offense came over to me and said ‘You set that up.’ ’’ Wilson said.

* Victor Cruz caught his touchdown pass against CB Carlos Rogers, the player who irked the Giants receiver last year by mimicking his salsa touchdown celebration. Rogers this week said he did not know the dance was in honor of Cruz’s grandmother and promised not to do it again.

“He was a real good dude for that,’’ Cruz said.

* WR Hakeem Nicks played for the first time in four games and finished with three receptions for 44 yards. Nicks said he could have hauled in a deep pass early in the first quarter if he were at full speed.

“Probably just a little bit of timing and obviously probably a little bit of me not being able to burst as good as I could,’’ Nicks said. “It will come back with me trusting it and getting my confidence back.”

* Defensive coordinator Perry Fewell put some new packages in for this game and one of them featured seldom-used DE Adrian Tracy in a linebacker role.

Tracy got one of the Giants’ six sacks.

“It’s funny because every day in meetings I write at the top of my notebook ‘Every player has a role, define your role,’ ’’ Tracy said. “This week I was able to get in the gameplan and hopefully define my role.’’

* It was like old-home week in the Giants locker room, with 49ers RB Brandon Jacobs making the rounds.

Former offensive lineman, Rich Seubert, who now lives in California, was also making his presence known, once yelling “Put a shirt on, Snee’’ across the room to Chris Snee, who was conducting a shirtless interview.

* It is a coincidence the pass rush awakened days after getting a visit from Michael Strahan, who hung out with the defensive linemen and offered tips and suggestions.

“He just came in, he was bored being in New York making all the money he’s making,’’ Justin Tuck cracked.